v3.21.2

Long-Term Debt - Schedule of Outstanding Senior Notes Issuances (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount	$ 262,500	$ 262,500
Less: unamortized issuance costs	7,264	7,374
Carrying value	255,236	255,126
Senior Notes
Debt Instrument [Line Items]
Principal amount	262,500	262,500
Less: unamortized issuance costs	7,264	7,374
Carrying value	255,236	255,126
Senior Notes | 2016 Senior Notes
Debt Instrument [Line Items]
Principal amount	110,000	110,000
Less: unamortized issuance costs	3,489	3,516
Carrying value	106,511	$ 106,484
Original debt issuance costs	$ 3,715
Coupon rate	6.625%	6.625%
Effective interest rate	7.07%
Senior Notes | 2013 Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 152,500	$ 152,500
Less: unamortized issuance costs	3,775	3,858
Carrying value	148,725	$ 148,642
Original debt issuance costs	$ 5,054
Coupon rate	7.75%	7.75%
Effective interest rate	8.04%

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